About 6 months ago, I had an x10Hosting account with 3 domains on it closed, and I moved to a different hosting service. Previously, I had those domains registered with CloudFlare via x10's interface. As a result, attempting to enable CloudFlare on my domains now results in the error message "your domain has already been signed up with CloudFlare via the partner x10Hosting". As my x10 account is closed, I have no way of unregistering x10's CloudFlare from my domains. Who can I talk to or what can I do to get my domains unregistered from x10's CloudFlare service so that I can register them myself?